Pump attachment



UNITED STATES S. JARVIS ADAlVlS, OF PITTSBURG, PENNSYLVANIA.

PUM P ATTACH MENT.

' PATENT UFFICE.

SPECIFICATION forming part of Letters Patent No. 236,749, dated January 18, 1881..

Application filed December 2, 1680. (No model.)

'0 all whom 'it may concern Beit known that I, S. JARVIS ADAMs, of

.ttsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Pump Attachments or Links; and I do hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawings, forming a part of this specification, in which- -Figure l is a perspective view of my improved pump-link. Fig. 2 is a vertical section of the same. Fig. 3 is a perspective view 2' the pliable liner or sleeve; and Fig. 4 is a sectional view of a pump, showing the handle and rod in full lines, partly broken away.

Like letters of reference indicate like parts in each.

My invention relates to the pivotal attachments used in hand-pumps for connecting the handle to the pump-rod, by means of which the valves at the bottom of the well are operated. The attachments heretofore in general use for this purpose were formed of arod passing through the pump-handle, and having at its end a large cast-metal head through which a pivot-bar passed, and plates were riveted to this bar on either side of the head, and afterward bolted to the pump-rod. These attachments were difficult and expensive to make, as they required frequent handling, and whether the pivot-hole through the head was drilled or chilled in it was liable to be crooked in position and throw the parts out of line. The side straps were also necessarily made of heavy iron on account of the strain on the rivet-holes, and were consequently difficult to punch and finish, as well as to rivet in true line on the head, so that the bolt-holes were opposite each other, this being a source of constant annoyance to consumers. Their operation was also unsatisfactory, as it was difficult to fit the heavy plates to the pump-rod, and these plates were liable to become detached from the pivot-rod on account of the loosening of the rivets.

The object of my invention is to provide an attachment which requires less metal and work, and is consequently cheaper in manufacture, is more easily attached, and more serviceable, than the pump-links heretofore used.

It consists in an attachment formed of a stirrup or link to be attached to the handle, a pliable liner or sleeve fitting around the pivotbar ofthelink, and a bent strap fitting around the pivot-bar and pliable sleeve, and down on either side of the pump-rod,:by means of which the link is secured to the pump-rod.

To enable others skilled in the art to make and use my invention, I will describe its construction and operation.

In the drawings, Arepresents the pump; 13, the handle, pivoted thereto at I), and (l the pump-rod, all of which are of the usual construction.

D is the stirrup, which is formed of thelink d and rod d, the rod being preferably of wrought-iron, while the link is cast thereon, though the whole may he made of either wrought or cast metal, as desired. The bar 0 of the link forms the pivot on which the pumprod works. A shoulder, f, is formed on the stirrup, against which the handle fits, the rod d passing through the handle and being secured therein by a nut.

G is the liner or sleeve, being formed of a short plate or strap of wrought metal. It is bent around the bar 0 of the link by suitable machinery, the edges being brought together so as to form a flat base to rest against the top of the pump-rod and solid or continuous curved bearing in which the bar 0 works. It thus forms a pliable sleeve which takes the wear and will not be broken by the jar in the operation of the pump, and yet is small enough to fit within the securing-strap at the top of the pump-rod, and is not so liable to break or become loose and shaky as where a cast sleeve is used. The sleeve fits entirely around the bar and takes all the wear in the operation of the pump, and it is therefore made of rather heavy iron.

K is the strap for securing the stirrup to the pump-rod. It is formed of a thin band of iron, in which the bolt-holes 7c are first punched, and which is then bent in the center, as at m, by suitable machinery, so that the bolt-holes in either end are brought exactly opposite each other for convenience in attaching it to the pump-rod.

My improved pump attachment is used in the following manner: The stirrup D having been previously formed, the liner or sleeve G is bent around "the bar 0 of the link, the ends being brought together, as shown. The bent strap K is passed through the link, the bend m of the strap fitting over the pivot-bar and liner. The strap is then fitted on either side of the pump-rod, the flat portion of the sleeve fitting against the top of the rod so as to prevent it from turning, and the bolts n are passed through the pump-rod and bolt-holes k and secured by nuts or riveting, as desired, after which the rod 01 of the stirrup may be passed through the pump-handle and secured by a nut in the usual manner.

When the pump is in operation the pivotbar 6 of the link at Works or turns in the sleeve Gr, so that all the wear of the link comes on this bar and sleeve. As the sleeve entirely surrounds the bar, the bar is prevented from wearing into the top of the pump-rod or the link into the bend of the strap K. For this reason a much thinner and cheaper iron can be used for forming the straps, its only function being to support the pump-rod on the stirrup. As the attaching-strap fits on the front and back of the pump-rod, there is no side strain on the bolts, and hence no tendency for them to split the rod.

The pump attachment thus formed is much more secure and serviceable and less subject to wear or accident than those formerly in use. It presents a much neater appearance,

and as there is no rivetingor drilling of the parts and less handlingin makingit, and as itis much lighter in weight, it is proportionately cheaper in manufacture. It is also more easily attached to the pump-rod, as the bolt-holes in the bent strap are always brought opposite each other, and the light strap has more spring, and will consequently yield to fit around the 40 pump-rod.

For shipping, the pliable sleeve can be bent around the pivot-bar of the stirrup and these and the straps packed separately, to be secured together where the pump is made.

In some cases the pliable sleeve G may be formed in the shape of a U and inverted and placed around the pivot-bar within the bent strap in such position that the ends rest on the top of the pump-rod; but this is not so satisfactory as where the sleeve entirely surrounds the pivot-bar.

What I claim as my invention, and desire to secure by Letters Patent, is

In pivotal attachments forhconnecting the handles and rods of pumps, the combination of the stirrup or link D, pliable sleeve Gr, fitting around the pivot-bar of the link, and bent attaching-strap K, substantially as and for the purposes set forth.

In testimony whereof I, the said S. JARVIS ADAMS, have hereunto set my hand.

S. JARVIS ADAMS.

Witnesses:

HENRY G. J ONES, JAMES I. KAY. 

